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scientific methodAR
7th grade vocab words for scientific method Unit
| vocab word | definition |
|---|---|
| hypothesis | an educated guess |
| observation | Can be bits of information you gather with your senses. |
| inference | Is a conclusion about an observation |
| scientific methods | solving any problem scientifically involves several steps. |
| independent variable | Is the number of times you do it |
| dependent variable | is the factor,or outcome |
| constant | are factors in an experiment that stay the same. |
| control | is a standard used for comparison |
| Compound | made from 2 different atoms that chemically combine |
| Louis Dot Structure | picture that shows how elements form a compound using valence electrons |
| Covalent Compound | 2 non metals |
| ionic Compound | metal and nonmetal |
| molecule | two atoms combined |
| Element | one type of atom |
| Conservation of Mass | matter is never created to destroy it simply rearing itself. |
| substances | |
| heterogeneous mixture | |
| homogeneous mixture | |
| solution | |
| solute | |
| solvent | |
| precipitate | |
| cell walls | rigid structure that encloses supports and protects the cells of plants algae fungi most bacteria |
| cell membrane | protective outer covering of all cells that regulates the interaction between the cell and the environment |
| cytoplasma | constantly moving gelatinlike mixture inside the cell membrane that contains heredity material and is the location of most of the cell's life processes |
| ribosomes | small structure on which cells make their own proteins |
| cell theory | states that all organisms are made up of one or more cells the cells is the basic unit of life and all cells come from other cells. |
| organelles | structure in the cytoplasm of a eukaryotic cell that can act as a storage site process energy move materials or manufacture substances |
| chloroplasts | green chlorophyll-containing plant-cell organelle that captures light energy which is used to make sugar |
| Mitochondria | cell organelle where food is broken down which releases energy |
| nucleus | organelle that controls all the activities of a cell and contains hereditary material made of DNA |
| endoplasmic reticulum | cytoplasmic organelle that moves materials around in a cell and made upon a complex series of folded membranes |
| Golgi bodies | oragnelles that sort and package cellular materials and transport them within the cell or out of the cell |
| tissue | group of similar cells that work together to do one job |
| organ | structure such as the heart made up of different types of tissues that work all together |
| organ system | a group of organs working together to perform a certain function |
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